Black Necklace
From JUMP: Assemble Wiki
Black Necklace is a Tier 2 Magic 
Equipment.
In order to obtain Black Necklace you will need:
| Max HP | 360 |
| Max Mana | 450 |
| Cumulative Price | 900 |
Sole Passive - Sublimation: After the character levels up, recovers 205 HP and Mana within 3s.